Alas the great Pysol card game does not fit the KDE look. So I made an icon set for it that uses the crystal icons (gif - for Pysol does not support png).
To use the new icons (or some you create yourself) you have to put them into the systemwide Pysol directory, depending on your distribution, e.g. /usr/share/games/pysol. There you'll find two folders, "images" and "toolbar". Copy the new icons to these folders, but don't forget to backup the old pictures (you'll never know).
Looks IMHO best with the huge icons.
And yes, I know that Pysol is not a KDE application. But why not try to make it look like it's one? :)